The Brumly Boys are another gang in the book. Interesting how two of the three gangs have identities tied to one individual. Tim Shephards gang was called the Shephard Gang. The Brumly Boys Boys referring in a sense to individuality. Only the Greasers had a name that did not reference individuality. This emphasizes the "family" nature of their gang.
The Brumly boys are another gang that is a little more organized than Ponyboy and posse. They join our guys in the rumble scene in chapter 9 to help them fight the Socs and win. The actually have a leader and are an organized gang whereas our boys are just a group of friends.
In the Rumble (Chapter 9) There are three gangs; the Sheppard gang (Tim’s gang) Pony’s gang (whose unofficial leader is Dallas Winston) and The Brumly Boys (Who are not described much.)
They are the most organized gang mentioned in all of Hinton’s books. They have a leader and a co-leader. When a member of the Brumly gang uses a piece of broken glass during the rumble, he gets yelled at by the leader of the gang.